Greetings - from more formal to less formal

Here are greetings that you'll hear in Israel. Ranked roughly from more formal to less formal, though really only the first two are at all formal. And those two can also be used in less formal settings. 
Israel isn't exactly a formal place.

שלום
shalom

?מה שלומך
ma shlomkha / ma shlomekh

?מה קורה
ma kore

?מה המצב
ma hamatsav

?מה העניינים
ma ha'inyanim

?מה הולך (less common than the others)
ma holekh

היי
hai

אהלן
ahlan